SRS Request- Ace Conversion Kit # U206

Would the SRS records have anything on Ace conversion kits? I have U206, if this information would be available could someone check for me?

My apologies if I am posting this in the wrong area or asking for something I should not be asking for,

Thanks in advance,
Bob

Does this one letter to the military?

Hi Johnny,
I am not sure. I was going to send a letter to Colt on it and never have. I was at a show this weekend and someone mentioned the SRS records might answer the question for me.
Bob